A、Mr Cusack and his wife. B、Mr Cusack’s grandson. C、A computer software. D、Mr Cusack. D乔恩·布莱克·丘萨克的儿子叫乔恩·布莱克·丘萨克2．0，那么他自己就是最原始的版本

A proud US father has named his son after a computer software term. Jon Blake Cusack, from Michigan, told local newspapers the US traditional way of adding "Junior" or " II " after a boy’s name was too common.
    So, when his son was born last week, he decided on the name Jon Blake Cusack 2.0, as if he were a software upgrade.
    Mr Cusack admitted that it took months to persuade his wife, Jamie, to accept the idea.
    Mrs Cusack said she asked several friends whether they can accept this name or not.
    All the men, she said, felt the name was "cool". However, her women friends did not think so. "I think the women will end up liking it," she said.
    Mr Cusack told the local newspaper he got the idea from a film called The Legend of 1900, in which an abandoned baby is given the name 1900 to remember the year of its birth. "I thought that if they can do it, why can’t we?" he said.
    After little Jon Version 2.0 was born, Mr Cusack even sent a celebratory email to the family and friends designed to look as though he and his wife had created new software.
    "I wrote things like there are a lot of new features from Version 1.0 with additional features from Jamie," he said. And he is already planning for his son’s future. "If he has a child, he could name it 3.0," he said.
Questions 23 to 25 are based on the passage you have just heard.
23. What do we know about "Jon Black Cusack 2.0" according to the passage?
24. What do the names of "1900" and "Jon Version 2.0" have in common?
25. What does "Version 1.0" refer to according to the passage?